Idea for electrooculographic EILD system. Cheap. Opensource components already developed.

Heyo.

New guy here.
Had an idea for an open source EOG (electrooculography) facemask -> smartphone interface with audio output for speaker/headphone-based, flashing light, or fingertip-vibrator lucid dreaming induction.

An electrooculograph uses electrical signals based on voltage-potential to measure the position of the eyes.
Video Example (Notice that sound can be plugged directly into a smartphone mic-jack to listen to the signal and drive lucid-dream induction software.)

The premise is very simple and has been discussed before: make a facemask with electrodes built into the temples. (you can get stick-on ones for SUPER CHEAP) hook it up to an electrooculograph. Measure eye movements directly for REM. The electrooculograph is plugged into a smartphone running software almost identical to software such as LucidDreamingApp. When REM is detected, the software send a signal via light, audio, and/or vibration to the dreamer to induce a lucid dream.
Many amazing capabilities in direct REM detection:
-Automatically detect REM and signal dreamer to induce lucidity.
-Automatically detect end of REM and wake dreamer to improve dream recall.
-Improve WILD performance by improving accuracy of optimal wake-schedule as well as recall mentioned above.

All of the components:

1. Intelsath eyeboard:
Article
Video

An open source EOG board with left/right sensing.
-integrated signal filters.
-integrated analog-digital converter for serial-port coms.
-capable (and, frankly, INTENDED) to be used with glasses/goggles/facemasks.
-Very cheap. Starter kit is available for $150 US. Can be built from scratch for far less.
-Can be interfaced with a smartphone via audiocable to drive lucid-dreaming induction software.

2. (Nearly costless) Oscilloscope hack for smartphones

-This may not be necessary as the Eyeboard has an integrated ADC. Depending upon the app, you may want to use the ADC on the Eyeboard or bypass it and use the phones: Eyeboard output signal is already digital, so the phone will receive standard digitally quantized information about user-eye position and movement. All that is required is interpretation software that can talk to a lucid dreaming app, which is mainly interested in low-frequency signals only suitable with a digital signal.

3. Microphone/headphone splitter for smartphone audio jack

Headphones can still be used with the phone for audio induction purposes. Like if you have a smartphone driving the software...the microphone is what receives the information from the eyeboard system. So you can split it at the jack such that you plug the eyeboard into the mic-port of the splitter and the headphones into the headphone-port of the splitter. Of course most decent phones will have a reasonable integrated speaker, too.

4. Smartphone and software:
Operational parameters of the software:
-You set a delay on EOG activation to ensure that you fall asleep before it starts looking for REM (maybe 1 hour)
-Set an audio induction track with playback length/volume parameters etc.
-Set REM detection thresholds.
-Set a gyroscopic cutoff threshold.
-Set EOG end-of-REM detection parameters: perhaps an audio track that wakes you up after REM ends that reminds you to recall the dream and write it down.
-filtration of noise due to electrode disturbances:
Use the gyrosope on the smartphone device to listen for body-movement, interrupt REM detection if true - electrodes may be at risk of disturbances which may be mis-interpreted by the lucid dreaming app as REM.

What a typical night might look like:
-By the bed: Dream Journal, speakers/headphones, eyeboard-rig & electrode-mask.
-User plugs headphones and eyeboard-rig into smartphone.
-Activates lucid-dreaming software. (something like luciddreamingapp - Lucid Dreaming App - Detects dreams, plays audio.)
-User lies down, places smartphone on bed near/under pillow.
-Puts on mask/sticks on electrodes (and headphones if necessary)
-User falls asleep and eventually arrives at REM stage.
-Eyeboard/smartphone detect REM directly and a trigger threshold is met (maybe one minute or more of registered REM)
-Smartphone enters induction mode and begins playing induction-audio (whatever track the user chooses). Maybe a fingertip-vibrator. Flashing a light, etc. Audio could be something that the smartphone plays randomly during the day from that same app...you'd select a track (say, birds singing for example) and practice reality checks whenever you hear that track.)
-User may or may not become lucid.
-Smartphone detects the end of REM state and threshold is met (maybe 1+ minutes of non-REM) which causes the phone to enter wakeup-recall mode. Phone begins playing wakeup-audio.
-User is awoken and prompted to recall the dream (whether lucid or not) and record it in the dream journal.
-User may choose another REM-cycle or just get some full-sleep for the rest of the night.

Hybrid EILD/Wakeback-WILD mode could also be used:
-Phone detects onset of REM stage, threshold is met and wakeup-audio track is played.
-User is awoken and prompted to prepare for a WILD.
-User initiates "back-to-bed-mode" and phone optionally plays gentle-assist-track to keep him/her lucid through to REM sleep.
-Once REM ends and threshold is met, user is awoken to recall/record dream.

All of is basically already available from software such as LucidDreamingApp
So with some basic tweaks, you could just have direct measurement of the eyes' movement during REM plugged into the audio jack of the smartphone to drive the software.

Parts based on Intelsath:

1 x ATMega328 P-PU
1 x Instrument amp, INA118P
1 x Op-amp, LM358N
1 x USB-Serial adapter
1 x Op-amp, LM741CN/N
2 x Voltage regulator, 5V, 7805
1 x Crystal, 14.7456 MHz
1 x Power supply, 12V, 3.6W
2 x Switch, SPDT slide
1 x Hookup wire, 22 gauge, multiple colors
2 x Mini alligator clip jumpers
1 x PCB or solderless breadboard
3 x Electrodes, medical
Resistors:
2 x Resistor, 27k ohm
1 x 100 ohm 1/4W 5% resistor (brown black brown gold)
1 x 1/4W 56k ohm resistor
1 x 1/4W 5% 100K resistor
1 x Resistor, 10M ohm
Capacitors:
4 x Capacitors: 0.1µF
(all capacitors are .01µF

Smartphone Stuff:

Audio Splitter.

Headphones/speaker.

Software.